YUHONG HOLDING GROUP CO., LTD
| Fin Pitch | 2.5mm |
| Length | 6m or customized |
| Payment Terms | T/T,L/C |
| Fin Material | Aluminum 1060 |
| Base Tube Material | N08825 (Incoloy 825) |
| Base Tube OD | 25.4mm |
| Fin Thickness | 0.4mm |
| Fin Height | 12.7mm |
| Packaging Details | Ply-Wooden Case + Iron Frame |
| Wall Thickness | 1.24mm |
| Fin Type | Extruded Bimetallic Fin |
| Supply Ability | 10000 Tons/Month |
| Standard | ASME SB163 / ASTM B163 |
| Delivery Time | 20-30 working days after deposit |
| Max Service Temperature | 260°C (aluminum fin) |
| Certification | ABS, BV, DNV, CCS, LR |
| Model Number | ASME SB163 N08825 Extruded Fin Tube |
| Place of Origin | China |
| Brand Name | YUHONG |
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Product Specification
| Fin Pitch | 2.5mm | Length | 6m or customized |
| Payment Terms | T/T,L/C | Fin Material | Aluminum 1060 |
| Base Tube Material | N08825 (Incoloy 825) | Base Tube OD | 25.4mm |
| Fin Thickness | 0.4mm | Fin Height | 12.7mm |
| Packaging Details | Ply-Wooden Case + Iron Frame | Wall Thickness | 1.24mm |
| Fin Type | Extruded Bimetallic Fin | Supply Ability | 10000 Tons/Month |
| Standard | ASME SB163 / ASTM B163 | Delivery Time | 20-30 working days after deposit |
| Max Service Temperature | 260°C (aluminum fin) | Certification | ABS, BV, DNV, CCS, LR |
| Model Number | ASME SB163 N08825 Extruded Fin Tube | Place of Origin | China |
| Brand Name | YUHONG | ||
| High Light | Extruded Aluminum Fin Tube ，N08825 Incoloy 825 Corrosion Resistant ，ASME SB163 Chemical Industry Fin Tube | ||
Overview
Corrosion failures in chemical and petrochemical heat exchange equipment cause unplanned shutdowns, costly repairs and serious safety risks. ASME SB163 N08825 extruded fin tube is engineered to solve exactly this problem. It combines an Incoloy 825 (UNS N08825) seamless base tube with aluminum fins extruded under high pressure, delivering a bimetallic finned tube that survives sulfuric acid, phosphoric acid, H2S and other highly corrosive media year after year. If your plant handles aggressive process fluids and demands reliable, long-life heat transfer, this finned tube is the answer you are looking for.
Proven in the toughest chemical and petrochemical services, this finned tube is the first choice where corrosive media and elevated temperatures meet. See how it performs in your application area.
| Application | Typical Service Conditions | Why N08825 Extruded Fin Tube |
|---|---|---|
| Sulfuric acid production plants | SO2/SO3 gas cooling, acid mist, high temperature | Incoloy 825 resists sulfuric acid over a wide concentration range |
| Phosphoric acid production plants | Wet-process phosphoric acid, fluoride-containing slurry | Excellent resistance to phosphoric acid and fluoride attack |
| Refinery crude oil preheaters | Sour crude, H2S, naphthenic acid at high temperature | Resists sulfide stress corrosion and naphthenic acid corrosion |
| Natural gas processing heat exchangers | Acid gas with H2S and CO2, amine service | High resistance to sour gas corrosion and pitting |
| Waste acid regeneration units | Spent acid, strong oxidizing and reducing media | Stable in highly corrosive regenerated acid streams |
UNS N08825 is a nickel-iron-chromium alloy stabilized with molybdenum, copper and titanium. The result is a material that stands up to both oxidizing and reducing environments, giving your heat exchange equipment a longer operating life and lower total cost of ownership.
| Property | Performance Evidence | Benefit in Chemical & Petrochemical Service |
|---|---|---|
| Sulfuric acid resistance | Resists H2SO4 over wide concentration and temperature ranges | Reliable service in acid coolers and heat recovery units |
| Phosphoric acid resistance | Excellent in wet-process phosphoric acid | Long life in phosphoric acid evaporators and heaters |
| Sulfide stress corrosion resistance | Stable in H2S and sour gas environments | Safe operation in refineries and gas plants |
| Pitting and crevice corrosion resistance | Enhanced by molybdenum and copper | Suitable for chloride-containing cooling water |
| Mechanical strength at elevated temperature | Good creep and tensile properties | Supports high-temperature process duties |
Fins are cold-extruded from an aluminum sleeve onto the N08825 base tube under high pressure, forming a tight mechanical bond with zero air gap. The result is maximum heat transfer, fins that stay locked under thermal cycling, and a tube that handles vibration without loosening.
| Process Feature | Technical Detail | Resulting Benefit |
|---|---|---|
| Fin forming method | Cold extrusion of aluminum sleeve onto base tube | No air gap, maximum heat transfer efficiency |
| Fin retention | Interference fit between fin root and tube surface | Fins stay firmly locked under thermal cycling |
| Material combination | N08825 tube + aluminum 1060 fin | Corrosion-resistant tube with lightweight conductive fin |
| Fin geometry | Fin height 12.7mm, pitch 2.5mm, thickness 0.4mm | High surface area with manageable pressure drop |
Extruded fins enlarge the external heat transfer surface by 8-12 times per meter of tube, dramatically improving the efficiency of air coolers, heat exchangers and condensers. The fin profile promotes turbulent flow for stronger convective heat transfer, while the tight fin-to-tube bond keeps contact resistance negligible. You get more thermal duty from a smaller, lighter bundle.
Ready to upgrade your heat exchange equipment with corrosion-resistant N08825 extruded fin tubes? Send us your duty parameters - operating temperature, pressure, process media, tube size and fin requirements - and our engineers will recommend the optimal configuration with a quotation within 24 hours. Contact us today for a free consultation and competitive factory pricing.
The standard configuration is shown below; other dimensions are available on request to match the design duty of your equipment.
| Parameter | Value |
|---|---|
| Standard | ASME SB163 / ASTM B163 |
| Base Tube Material | N08825 (Incoloy 825) |
| Fin Material | Aluminum 1060 |
| Base Tube OD | 25.4mm |
| Wall Thickness | 1.24mm |
| Fin Height | 12.7mm |
| Fin Pitch | 2.5mm |
| Fin Thickness | 0.4mm |
| Max Service Temperature | 260°C (aluminum fin) |
| Length | 6m or customized |
Company Details
Business Type:
Manufacturer,Importer,Exporter,Trading Company,Seller,Other
Year Established:
1990
Total Annual:
50M-70M
Employee Number:
50~800
Ecer Certification：
Verified Supplier
Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n... Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n...
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